JPS5791096A - Method and apparatus for noise reduction by head phone - Google Patents

Method and apparatus for noise reduction by head phone

Info

Publication number
JPS5791096A
JPS5791096A JP55166434A JP16643480A JPS5791096A JP S5791096 A JPS5791096 A JP S5791096A JP 55166434 A JP55166434 A JP 55166434A JP 16643480 A JP16643480 A JP 16643480A JP S5791096 A JPS5791096 A JP S5791096A
Authority
JP
Japan
Prior art keywords
noise
microphone
headphone
information
ears
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP55166434A
Other languages
Japanese (ja)
Inventor
Hisayoshi Nakatsuka
Yoshifumi Uetsuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Namiki Precision Jewel Co Ltd
Original Assignee
Namiki Precision Jewel Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Namiki Precision Jewel Co Ltd filed Critical Namiki Precision Jewel Co Ltd
Priority to JP55166434A priority Critical patent/JPS5791096A/en
Publication of JPS5791096A publication Critical patent/JPS5791096A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17857—Geometric disposition, e.g. placement of microphones
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17873—General system configurations using a reference signal without an error signal, e.g. pure feedforward
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17885—General system configurations additionally using a desired external signal, e.g. pass-through audio such as music or speech
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/105—Appliances, e.g. washing machines or dishwashers
    • G10K2210/1053—Hi-fi, i.e. anything involving music, radios or loudspeakers
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
    • G10K2210/1081—Earphones, e.g. for telephones, ear protectors or headsets
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3011—Single acoustic input

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

PURPOSE:To reduce noise to ears and to effectively listen to required information only, by providing a microphone at the outside of a headphone speaker unit and inputting a signal incident to the microphone to the speaker unit through phase inversion. CONSTITUTION:Microphones 4,4' are located outside headphone speaker units 2,2' of a headphone 1, and the output is inputted to addition amplifiers 6,6' of corresponding left and right channels via phase inversion circuits 5,5'. With such a construction, if a noise N takes place externally, a noise wave 9 is incident to a microphone 4, and a signal in phase reflection at the circuits 5,5' is formed, and it is applied to the units 2,2' together with the information from a music information supply 3 to cancel noise 8 applied to ears 8, allowing to effectively listen to required audio or music information only.
JP55166434A 1980-11-26 1980-11-26 Method and apparatus for noise reduction by head phone Pending JPS5791096A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55166434A JPS5791096A (en) 1980-11-26 1980-11-26 Method and apparatus for noise reduction by head phone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55166434A JPS5791096A (en) 1980-11-26 1980-11-26 Method and apparatus for noise reduction by head phone

Publications (1)

Publication Number Publication Date
JPS5791096A true JPS5791096A (en) 1982-06-07

Family

ID=15831335

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55166434A Pending JPS5791096A (en) 1980-11-26 1980-11-26 Method and apparatus for noise reduction by head phone

Country Status (1)

Country Link
JP (1) JPS5791096A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02230900A (en) * 1989-03-03 1990-09-13 Nippon Telegr & Teleph Corp <Ntt> Sound field control method
WO2010129212A1 (en) * 2009-04-28 2010-11-11 Bose Corporation Anr circuit with external circuit cooperation
US8144890B2 (en) 2009-04-28 2012-03-27 Bose Corporation ANR settings boot loading
US8280066B2 (en) 2009-04-28 2012-10-02 Bose Corporation Binaural feedforward-based ANR

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02230900A (en) * 1989-03-03 1990-09-13 Nippon Telegr & Teleph Corp <Ntt> Sound field control method
WO2010129212A1 (en) * 2009-04-28 2010-11-11 Bose Corporation Anr circuit with external circuit cooperation
US8144890B2 (en) 2009-04-28 2012-03-27 Bose Corporation ANR settings boot loading
US8280066B2 (en) 2009-04-28 2012-10-02 Bose Corporation Binaural feedforward-based ANR
EP2584559A1 (en) * 2009-04-28 2013-04-24 Bose Corporation Personal acoustic noise reducing circuit

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